1. New Thermostat (OE #25020515, Gates #33106)
2. 5/16" Socket Wrench
3. 1/4" Socket Wrench
4. Drain Pan
5. 50/50 Mix of Antifreeze and Water
6. Funnel
7. Wrench
Procedure:
1. Open the hood of the vehicle.
2. Locate the thermostat housing. It will be located on the front side of the engine, near the top. The thermostat housing is typically made of metal and has a large bolt in the center.
3. Drain some coolant out of the radiator by opening the drain plug on the bottom of the radiator. Allow approximately 1 quart of fluid to drain into a drain pan.
4. Locate the two bolts that secure the thermostat housing to the engine block. One will be located above and one below the coolant outlet pipe. Use the 5/16" socket wrench to remove them, being careful not to drop them.
5. The thermostat will now be visible inside the thermostat housing. It will be a round, metal disk with a spring-loaded valve in the center. Remove the old thermostat by carefully pulling it out of the housing.
6. Use a 1/4" socket wrench to remove the bolts holding the thermostat housing to the coolant outlet pipe. Lift the housing off of the pipe and remove the old thermostat.
7. Clean the gasket mating surfaces on both the thermostat housing and the engine block.
8. Insert the new thermostat into the housing, ensuring that the spring-loaded valve is facing the engine.
9. Carefully position the thermostat housing back onto the engine block, ensuring the new thermostat lines up properly.
10. Secure both the thermostat housing back to the engine block and reconnect the housing to the coolant outlet pipe.
11. Reinstall the drain plug in the bottom of the radiator.
12. Add the 50/50 mix of antifreeze and water to the radiator until the coolant level is between the "Full" and "Add" marks on the reservoir tank.
13. Start the engine and let it run for a few minutes until the thermostat opens. Check for any leaks around the thermostat housing.
14. Turn off the engine and check the coolant level again. Add more coolant if necessary.
*Be sure to wear safety glasses when working with antifreeze, as it can be harmful to your eyes and skin.*
